<div id="vue_det">
    <h1>site : {{site}}</h1>
    <h1>url : {{url}}</h1>
    <h1>{{details()}}</h1>
</div>
<script type="text/javascript">
    var vm = new Vue({
        el: '#vue_det',
        data: {
            site: "1231fhthtrfh23",
            url: "123123d123",
            alexa: "10000"
        },
        methods: {
            details: function() {
                return  this.site + " 1231231hujkh23123";
            }
        }
    })
</script>